Robtex

Up: 80.191.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 80.191.216.0/23
Down right: 80.191.218.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.191.216.0	A	iranopen.ir
80.191.216.2	A	dns.qiau.ac.ir
80.191.216.8	A	rtc.qiau.ac.ir
80.191.216.14	A	user36.olstaffing.com
80.191.216.14	A	mail.iranopen.ir
80.191.216.14	A	ns.creation-sites-internet-rouen.com
80.191.216.15	A	mail.qiau.ac.ir
80.191.216.18	A+PTR	qiau.ac.ir
80.191.216.18	A	csc.qiau.ac.ir
80.191.216.18	A	allyay.com
80.191.216.23	A	cyber3.qiau.ac.ir
80.191.216.24	A	cyber4.qiau.ac.ir
80.191.216.25	A	cyber5.qiau.ac.ir
80.191.216.102	A	iranopen.ir
80.191.216.102	A	irnc.ir
80.191.216.103	A	www.iranopen.ir
80.191.216.235	A	www.to3d.org
80.191.216.235	A	to3d.org
80.191.216.235	A	to3d.ir
80.191.219.194	A	mail.tc-qazvin.ir
80.191.219.195	A	tcqnet.ir
80.191.219.195	A	srv4.tcqnet.ir
80.191.219.242	A	3pt.ir
80.191.219.242	A	armaliftasansor.com
80.191.219.242	A	kinogid-hd.ru